By FOX Sports staff
Kashiwa are in firm control of their Round of 16 tie after claiming a two-goal lead in the first leg, courtesy of goals from Masato Kudo and Tatsuya Masushima.
It was also Jeonbuk's first defeat of the campaign and Nelsinho believes one of the keys to the result was his side's ability to cope with the aggressive style of play from their South Korean opponents.
"Jeonbuk adopted aggressive tactics but we were able deal with the difficult situations," he said on the AFC's official website. "Even though our defence and goalkeeper were under a lot of pressure.
"We were able to settle into the game early, although the quick goal [Kudo's third-minute opener] was unexpected.
"I am glad we were able to score two goals and that makes the second leg at home much easier for us."
Jeonbuk coach Fabio Lefundes admitted going behind after just three minutes was a game-defining moment, and is aware his side face an uphill task in next Wednesday's second leg if they are to progress to the quarters.
"We conceded an early goal and that made the rest of the game very hard," he said.
"We still had a lot of chances but were unable to capitalise.
"The away game is going to be a challenge for us to advance to the quarter-finals, but we must make use of every opportunity."
Jeonbuk won Asia's premier club competition back in 2006 and also have a runners-up finish in 2011 to their name.